BUG: Wrong message when whiteboards RT disabled in space

[SimoneZaza]

Also see #5990

Describe the bug In the whiteboards in spaces without RT Whiteboard enabled in space settings, the wrong message is shown. When a second user opens the whiteboard and clicks on the view mode message, it is stated that the space does allow for multiuser editing, but the max is reached. Also in the share dialog the message states that the space allows for RT whiteboards, while it doesn't.

To Reproduce Steps to reproduce the behavior:

1. Use two browsers to simulate two users on a whiteboard in a space that has whiteboards rt disabled in GA settings.

Expected behavior Text to be: "With the current subscription, one member can edit this whiteboard at a time. Contact the team upgrade the subscription of this Space for multi-user collaboration." Design: https://www.figma.com/file/b376cNErK9pDM6q2kYF3fk/Licencing-%2F-Subscriptions?type=design&node-id=223%3A51&mode=design&t=4bVo0Q70clkHKXA2-1

Areas that will be affected Optional, to be added by developer if relevant